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hartnn
 2 years ago
Best ResponseYou've already chosen the best response.1split cos^3 x = cos x * cos^2 x write cos^2 x = 1 sin^2 x then its easy to see that u = sin x du =cos x dx.

sat_chen
 2 years ago
Best ResponseYou've already chosen the best response.1so do you leave sin^5x as it is

hartnn
 2 years ago
Best ResponseYou've already chosen the best response.1yes, then you'll use it... s^5 (1s^2) c dx [s=sin, c=cos]

hartnn
 2 years ago
Best ResponseYou've already chosen the best response.1s^5 (1s^2) c dx = (s^5 s^7) cdx

sat_chen
 2 years ago
Best ResponseYou've already chosen the best response.1ah i see how that tricked me i tried to think it was a half angle formula or something

hartnn
 2 years ago
Best ResponseYou've already chosen the best response.1so, now can you solve that integral ?

sat_chen
 2 years ago
Best ResponseYou've already chosen the best response.1yea i can thanks a lot bro

sat_chen
 2 years ago
Best ResponseYou've already chosen the best response.1math not my best subject :P

hartnn
 2 years ago
Best ResponseYou've already chosen the best response.1it became my best subject, after lot of practicing :)

sat_chen
 2 years ago
Best ResponseYou've already chosen the best response.11 question though can you split sin of x to solve also

hartnn
 2 years ago
Best ResponseYou've already chosen the best response.1yes,but that will be more complicated....but yes.

sat_chen
 2 years ago
Best ResponseYou've already chosen the best response.1if i need help again asking you :P
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